Automatic controller for shafts, &amp;c.



BEST AVAILABLE COP No. 782,144. PATENTED FEB. '7, 1905.

0. KUHLEWIND.

AUTOMATIC CONTROLLER FOR SHAFTS, 8m.

APPLICATION TILED JAN. 28. 1901.

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C. KUHLEWIND. AUTOMATIC CONTROLLER FOR SHAFTS, &0.

APPLICATION FILED JAN. 28, 190.1.

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PATENTED FEB. 7, 1905.

G. KUHLBWIND. AUTOMATIC CONTROLLER FOR SHAFTS', 6w

APPLICATION FILED JAN. 28. 1901.

WITNESSES INVENTOR Y W W4 Gav/QM mdw BEST AVAILABLE COP UNITED STATES Patented February 7, 1905.

PATENT OFFICE.

CORNELIUS KUHLEVVIND, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HYDRAULIC VALVE AND REGULATOR COMPANY, LIMITED, OE PITTS- BURG, PENNSYLVANIA, A PENNSYLVANIA.

LIMITED PARTNERSHIP ASSOCIATION OF AUTOMATIC CONTROLLER FOR SHAFTS, 8m.

SPECIFICATION forming part of Letters Patent No. 782,144, dated February 7, 1905. Application filed January 28,1901. seatin 44,975.

To all whmn it may concern:

Be it known that I, CORNELIUS KUHLEWIND, of Pittsburg, Allegheny county, Pennsylvania, haveinvented anew and useful Automatic Controller for Shafts, &c., of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a front elevation of a hoop-finishing mill constructed in accordance with my invention. Figs. 2 and 3 are sectional front elevations of the driving-gear, showing the parts in two different positions; and Figs. 4 and 5 are end elevations of the driving mechanism and the mill, respectively, the chain being broken away in Fig. 4 for clearness of illustration.

My invention relates to the regulating or controlling of driven shafts, and is designed to provide mechanism which acts upon the driving connection or connections of the shaft and automatically changes this connection from a clutch connection-toe. positive connection. *1'

The invention is applicable to a great variety of locations, and I have shown it in the present drawings as applied to the finishingmill of a hoop-rolling train. In these finishing-mills the top roll has heretofore been driven merely by friction with the lower roll or the met-a1 passing between the rolls, and this has caused the lower roll to frequently become burned, so that it requires to be taken out and turned in a lathe, another being inserted in its place. The use of positive gearing for driving this upper roll has been found impracticable, since marks are made upon the rolled surface of the strip passing through.

As applied to this purpose my invention consists in providing automatic mechanism which shall change the connection for driving the upper roll from a clutch-drive to a positive connection whenever the upper roll starts to slow down in case of the metal stinlzhm i the per and lower rolls ofa-hoop-finishing mill.

these rolls being mounted in suitable housings 4 and 5. by wabbler connection 6 with shaft 7 The upper shaft'is driven by wabbler connection 8 to a shaft 9, carrying sprocket-wheel 10, engaged by sprocket-chainll, passing over another sproclretwheelv on'a counter-shaft 12. My improved regulator is applied to this counter-shaft, and in the form shown a gear-wheel '13 upon shaft 7 intermeshes with a toothed wheel 14, which is loosely mounted upon shaft The lower roll 3 is positively driven' J 12 between its sprocket-wheel and a collar 15 of the shaft. An innerly beveled or coneshaped ring 16 is bolted or otherwise secured to the face of wheel 14 and forms one member of a friction-clutch, the other member, 17, of which has a spline or key connection 18 with the shaft 12, upon which it slides.

In the clutch member 17 are mounted two sliding pins 19, which are normally forced outwardly by springs 20, their movement being limited by pin-and-slot connections 21 with the clutch' member in which they slide.

The clutch member 17 is provided with an annular groove within 'which fits a collar 22, having two bolts 23 secured thereto upon opposite sides and extending through holes in the hub of a fly-wheel 24. The nuts of these bolts bear upon followers, against which press A springs 25, surrounding the stems of. the bolts within the holes therefor in the fly-wheel. These springs normally draw the inner clutch member into engagement with the outer clutch member, which thus form a friction-clutch 1 connection between the shafts 7 and 12.

The fly-wheel 24 is mounted loosely uponbearing against its shoulder. bear upon heads 31 of the bolts 29 and normally hold the ratchet-teeth in engagement.

In the operation of the mill the parts of the driving-gear are normally in the position shown in Fig. 2, the friction-clutch constituting the connection between shafts 7 and 12, the upper roll beingdriven by sprocket-chain connection with shaft 12. The direction of rotation of the upper roll is clockwise, as shown by the arrows. When through a piece sticking in the rolls or any other reason the upper roll starts to slow down and diminish its speed relative to the lower roll, the teeth of the fly-wheel, which wheel will of course main tain its regular speed at this moment, will rise upon the teeth of the shaft. This causes the fly-wheel to slide along the shaft and force the inner clutch member along the shaft, so that its pins 19 are forced against the inner .face of the toothed wheel 14: and will enter oblong holes 32 through such wheel, the parts assuming the position shown in Fig. 3. A posit-iveconnection is thus made between the shafts 7 and 12, which compels the countershaft to again rotate at its correct speed relative to the shaft 7. As soon as its speed is GhUS corrected the teeth of the fly-wheel will slide. down those of the shaft-hub and the springs 28 will force the fly-wheel back to its iormalposition and withdraw the pins 19 from ;he toothed wheel 14, thus again making the friction-clutch connection between the shafts.

The advantages of my invention will be aparent to those skilled in the art. In the case if its application to a mill, as shown, the flyvheel'. acts as an automatic controller or coup- ;er which will automatically change thedrivlug connection from clutch connection to posilive connection, and vice versa, according to he demands upon the rolls. The burning of be lower roll, owing to the sticking of the iece, is thus avoid ed, and while it is normally riven by a friction-clutch a positive driving onnection is made whenever its speed begins 3 reduce. In the application of this conrolling system to other locations, such as crew-propeller shafts, &c. the fly-wheel, with ;s connections, will act as a governor or con- -oller and will by proper arrangement of ie connections prevent racing of the driven "laft and other difficulties, its action beingto old the shaft at or substantially at its predearmined speed by automatically making and reaking the clutch connection.

This system may be applied to many difn'ent locations, and the mechanism by which 1e fly-wheel actuates the clutch as well as ie other parts maybe widely varied without aparting from my invention.

I claim ombination with a driving-shaft, of

These springs a driven shaft having a yielding connection with the driving-shaft and having also a positive driving connection therewith, and a momentum device arranged to automatically act upon both the said connections to make or break them, upon variations of the relative speed of the shafts; substantially as described.

2. The combination with a driving-shaft, of a driven shaft having a yielding connection and also a positive connection with the driving-shaft, and a fly-wheel upon the driven shaft having connections arrangedto break the yielding connection and make the positive connection with the driving-shaft whenever the driven shaft starts to change its speed, substantially as described.

3. The combination with a driving-shaft, of a driven shaft having friction-clutch connection and also a positive connection with the driving-shaft and a momentum-wheel movable endwise of the driven shaft and having connections arranged to automatically actuate the positive connection when the driven shaft starts to change its speed; substantially as described.

4. The combination with a driving-shaft having a positive connection with one part of a friction-clutch, of a driven shaft having the other part of the friction-clutch secured thereto, a momentum-wheel on the driven shaft, and arranged to move endwise thereon, and

connections between the momentum-wheel and the clutch arranged to lock the loose clutch member to the driven shaft when the speed of this shaft varies; substantially as described.

5. The combination with a driven shaft, of a momentum-wheel driven positively in one direction by the shaft, means for sliding said wheel endwise on said shaft, a yielding connection between the momentum-wheel and a sliding clutch member secured to the shaft, anotherclutch member loose on the shaft and connected to the driving mechanism, and springs or similar devices for returning the fly-wheel to its normal position whenever the driven shaft is rotating at its correct relative speed; substantially as described.

6. In a rolling-mill, driving and driven shafts, a roll connected with the driven shaft, a friction-clutch for driving said shaft, a mome'ntum device and means actuated thereby to positively connect the shafts whenever the driven shaft varies from its desired speed; substantially as described.

In testimony whereof I have hereunto set my hand.

CORNELIUS KUHLEWIND.

Witnesses:

H. M. CoRwIN, (J. P. BYRNES. 

